Update README.md

README.md

@@ -412,7 +412,13 @@ sudo service nginx restart
 
 In order to experience high speed and low latency DNS resolution, you need to make some changes to your Pi-hole. These configurations are crucial because if you skip these steps you may experience very slow response times:
 
-1. Open the configuration file `/etc/dnsmasq.d/01-pihole.conf` and make sure that cache size is zero by setting `cache-size=0`. This step is important because the caching is already handled by the Unbound. **Please note that the changes made to this file will be overwritten once you update/modify Pi-hole.**
+1. Open the configuration file `/etc/pihole/setupVars.conf` and add the entry below.
+
+``
+CACHE_SIZE=0
+``
+
+* This step is important because the caching is already handled by the Unbound. **Please note that if the changes are only made to the file `/etc/dnsmasq.d/01-pihole.conf` they will be overwritten once you update/modify Pi-hole.**
 
 2. When you're using unbound you're relying on that for DNSSEC validation and caching, and Pi-hole doing those same things are just going to waste time validating DNSSEC twice. In order to resolve this issue you need to untick the `Use DNSSEC` option in Pi-hole web interface by navigating to `Settings > DNS > Advanced DNS settings`. 
 
@@ -428,4 +434,4 @@ Next steps to set Pi-hole's upstream DNS server to the unbound service
 
 ![Screenshot](./images/upstream_dns.PNG "Upstream DNS")
 
-4. Reboot Server to Apply all changes and check configuration
+4. Reboot Server to Apply all changes and check configuration